./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:08:43,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:08:43,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:08:43,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:08:43,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:08:43,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:08:43,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:08:43,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:08:43,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:08:43,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:08:43,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:08:43,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:08:43,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:08:43,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:08:43,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:08:43,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:08:43,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:08:43,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:08:43,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:08:43,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:08:43,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:08:43,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:08:43,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:08:43,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:08:43,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:08:43,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:08:43,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:08:43,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:08:43,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:08:43,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:08:43,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:08:43,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:08:43,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:08:43,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:08:43,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:08:43,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:08:43,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:08:43,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:08:43,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:08:43,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:08:43,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:08:43,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:08:43,614 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:08:43,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:08:43,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:08:43,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:08:43,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:08:43,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:08:43,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:08:43,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:08:43,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:08:43,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:08:43,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:08:43,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:08:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:08:43,619 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-12-13 15:08:43,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:08:43,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:08:43,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:08:43,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:08:43,806 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:08:43,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 15:08:46,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:08:46,564 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:08:46,565 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 15:08:46,582 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/6326f28f6/94d1dacaa30449948b3550acd2aaa956/FLAG2697937c7 [2022-12-13 15:08:46,873 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/6326f28f6/94d1dacaa30449948b3550acd2aaa956 [2022-12-13 15:08:46,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:08:46,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:08:46,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:08:46,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:08:46,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:08:46,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:08:46" (1/1) ... [2022-12-13 15:08:46,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5648f3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:46, skipping insertion in model container [2022-12-13 15:08:46,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:08:46" (1/1) ... [2022-12-13 15:08:46,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:08:46,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:08:47,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 15:08:47,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:08:47,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:08:47,481 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 15:08:47,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:08:47,582 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:08:47,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47 WrapperNode [2022-12-13 15:08:47,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:08:47,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:08:47,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:08:47,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:08:47,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,635 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-12-13 15:08:47,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:08:47,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:08:47,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:08:47,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:08:47,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:08:47,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:08:47,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:08:47,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:08:47,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (1/1) ... [2022-12-13 15:08:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:08:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:08:47,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:08:47,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:08:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:08:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:08:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-13 15:08:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-13 15:08:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:08:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:08:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:08:47,734 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:08:47,949 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:08:47,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:08:48,172 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:08:48,181 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:08:48,182 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:08:48,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:08:48 BoogieIcfgContainer [2022-12-13 15:08:48,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:08:48,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:08:48,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:08:48,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:08:48,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:08:46" (1/3) ... [2022-12-13 15:08:48,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5559e522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:08:48, skipping insertion in model container [2022-12-13 15:08:48,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:08:47" (2/3) ... [2022-12-13 15:08:48,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5559e522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:08:48, skipping insertion in model container [2022-12-13 15:08:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:08:48" (3/3) ... [2022-12-13 15:08:48,191 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-12-13 15:08:48,200 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:08:48,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:08:48,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 15:08:48,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:08:48,270 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:08:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-12-13 15:08:48,373 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2022-12-13 15:08:48,373 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:08:48,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-12-13 15:08:48,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-12-13 15:08:48,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-12-13 15:08:48,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:08:48,396 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 180 transitions, 372 flow [2022-12-13 15:08:48,399 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 180 transitions, 372 flow [2022-12-13 15:08:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 180 transitions, 372 flow [2022-12-13 15:08:48,439 INFO L130 PetriNetUnfolder]: 7/216 cut-off events. [2022-12-13 15:08:48,439 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:08:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 216 events. 7/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 129. Up to 4 conditions per place. [2022-12-13 15:08:48,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 2652 [2022-12-13 15:09:00,322 INFO L134 LiptonReduction]: Checked pairs total: 6201 [2022-12-13 15:09:00,322 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-12-13 15:09:00,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:09:00,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c22ab17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:09:00,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 15:09:00,339 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:09:00,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:09:00,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:00,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:09:00,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 659, now seen corresponding path program 1 times [2022-12-13 15:09:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:00,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268764069] [2022-12-13 15:09:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268764069] [2022-12-13 15:09:00,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268764069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:00,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:00,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:09:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542112828] [2022-12-13 15:09:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:09:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:09:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:09:00,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 387 [2022-12-13 15:09:00,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:00,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:00,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 387 [2022-12-13 15:09:00,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:00,631 INFO L130 PetriNetUnfolder]: 216/452 cut-off events. [2022-12-13 15:09:00,632 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 15:09:00,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 452 events. 216/452 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2193 event pairs, 215 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 783. Up to 389 conditions per place. [2022-12-13 15:09:00,636 INFO L137 encePairwiseOnDemand]: 384/387 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-12-13 15:09:00,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2022-12-13 15:09:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:09:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:09:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-12-13 15:09:00,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2022-12-13 15:09:00,651 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-12-13 15:09:00,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-12-13 15:09:00,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:00,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-12-13 15:09:00,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:00,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:00,664 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:00,666 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 384 transitions. [2022-12-13 15:09:00,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2022-12-13 15:09:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:09:00,671 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2022-12-13 15:09:00,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-12-13 15:09:00,677 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2022-12-13 15:09:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2022-12-13 15:09:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:00,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:00,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:09:00,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:09:00,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:00,679 INFO L85 PathProgramCache]: Analyzing trace with hash 20444660, now seen corresponding path program 1 times [2022-12-13 15:09:00,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:00,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879298900] [2022-12-13 15:09:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:00,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:01,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879298900] [2022-12-13 15:09:01,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879298900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:01,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:01,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:09:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980193365] [2022-12-13 15:09:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:01,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 387 [2022-12-13 15:09:01,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:01,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 387 [2022-12-13 15:09:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:01,260 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2022-12-13 15:09:01,260 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:09:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 668 events. 344/668 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3425 event pairs, 184 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1286. Up to 474 conditions per place. [2022-12-13 15:09:01,264 INFO L137 encePairwiseOnDemand]: 380/387 looper letters, 30 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2022-12-13 15:09:01,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2022-12-13 15:09:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:09:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2022-12-13 15:09:01,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45564168819982775 [2022-12-13 15:09:01,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2022-12-13 15:09:01,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2022-12-13 15:09:01,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:01,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2022-12-13 15:09:01,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,274 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 529 transitions. [2022-12-13 15:09:01,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2022-12-13 15:09:01,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:09:01,275 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2022-12-13 15:09:01,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2022-12-13 15:09:01,276 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 15:09:01,276 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2022-12-13 15:09:01,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:01,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:09:01,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:09:01,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash 633784015, now seen corresponding path program 1 times [2022-12-13 15:09:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:01,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515534856] [2022-12-13 15:09:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:01,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515534856] [2022-12-13 15:09:01,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515534856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:01,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:01,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:09:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023648543] [2022-12-13 15:09:01,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:01,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:01,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 387 [2022-12-13 15:09:01,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:01,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 387 [2022-12-13 15:09:01,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:01,630 INFO L130 PetriNetUnfolder]: 451/834 cut-off events. [2022-12-13 15:09:01,630 INFO L131 PetriNetUnfolder]: For 237/245 co-relation queries the response was YES. [2022-12-13 15:09:01,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 834 events. 451/834 cut-off events. For 237/245 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4264 event pairs, 227 based on Foata normal form. 47/875 useless extension candidates. Maximal degree in co-relation 2030. Up to 600 conditions per place. [2022-12-13 15:09:01,634 INFO L137 encePairwiseOnDemand]: 380/387 looper letters, 34 selfloop transitions, 9 changer transitions 2/47 dead transitions. [2022-12-13 15:09:01,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 238 flow [2022-12-13 15:09:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:09:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-12-13 15:09:01,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45650301464254955 [2022-12-13 15:09:01,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-12-13 15:09:01,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-12-13 15:09:01,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:01,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-12-13 15:09:01,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,640 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 3 states and 530 transitions. [2022-12-13 15:09:01,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 238 flow [2022-12-13 15:09:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:09:01,641 INFO L231 Difference]: Finished difference. Result has 36 places, 39 transitions, 163 flow [2022-12-13 15:09:01,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=39} [2022-12-13 15:09:01,642 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-12-13 15:09:01,642 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 39 transitions, 163 flow [2022-12-13 15:09:01,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:01,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:01,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:09:01,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:01,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash -64615666, now seen corresponding path program 1 times [2022-12-13 15:09:01,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:01,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985723820] [2022-12-13 15:09:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:01,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:01,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985723820] [2022-12-13 15:09:01,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985723820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:01,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:01,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:09:01,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989948791] [2022-12-13 15:09:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:01,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:01,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 387 [2022-12-13 15:09:01,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 39 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:01,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 387 [2022-12-13 15:09:01,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:01,809 INFO L130 PetriNetUnfolder]: 107/215 cut-off events. [2022-12-13 15:09:01,809 INFO L131 PetriNetUnfolder]: For 172/192 co-relation queries the response was YES. [2022-12-13 15:09:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 215 events. 107/215 cut-off events. For 172/192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 816 event pairs, 25 based on Foata normal form. 31/236 useless extension candidates. Maximal degree in co-relation 557. Up to 149 conditions per place. [2022-12-13 15:09:01,810 INFO L137 encePairwiseOnDemand]: 385/387 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 15:09:01,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2022-12-13 15:09:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:09:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 15:09:01,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2022-12-13 15:09:01,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 15:09:01,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 15:09:01,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:01,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 15:09:01,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,816 INFO L175 Difference]: Start difference. First operand has 36 places, 39 transitions, 163 flow. Second operand 3 states and 546 transitions. [2022-12-13 15:09:01,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2022-12-13 15:09:01,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 15:09:01,817 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2022-12-13 15:09:01,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 15:09:01,817 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2022-12-13 15:09:01,817 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2022-12-13 15:09:01,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:01,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:01,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:01,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:09:01,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1892678955, now seen corresponding path program 1 times [2022-12-13 15:09:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:01,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794445339] [2022-12-13 15:09:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:01,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:02,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794445339] [2022-12-13 15:09:02,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794445339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:02,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:02,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:09:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98019058] [2022-12-13 15:09:02,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:02,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2022-12-13 15:09:02,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:02,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2022-12-13 15:09:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:02,356 INFO L130 PetriNetUnfolder]: 94/216 cut-off events. [2022-12-13 15:09:02,356 INFO L131 PetriNetUnfolder]: For 61/67 co-relation queries the response was YES. [2022-12-13 15:09:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 216 events. 94/216 cut-off events. For 61/67 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 909 event pairs, 43 based on Foata normal form. 10/218 useless extension candidates. Maximal degree in co-relation 500. Up to 103 conditions per place. [2022-12-13 15:09:02,358 INFO L137 encePairwiseOnDemand]: 383/387 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-13 15:09:02,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 141 flow [2022-12-13 15:09:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:09:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2022-12-13 15:09:02,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46425495262704564 [2022-12-13 15:09:02,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2022-12-13 15:09:02,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2022-12-13 15:09:02,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:02,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2022-12-13 15:09:02,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,366 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 539 transitions. [2022-12-13 15:09:02,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 141 flow [2022-12-13 15:09:02,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:09:02,367 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2022-12-13 15:09:02,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 15:09:02,368 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2022-12-13 15:09:02,368 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2022-12-13 15:09:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:02,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:02,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:09:02,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1052697491, now seen corresponding path program 2 times [2022-12-13 15:09:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:02,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013329355] [2022-12-13 15:09:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:02,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013329355] [2022-12-13 15:09:02,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013329355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:02,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:02,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:09:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937490851] [2022-12-13 15:09:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:02,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2022-12-13 15:09:02,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:02,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2022-12-13 15:09:02,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:02,736 INFO L130 PetriNetUnfolder]: 46/137 cut-off events. [2022-12-13 15:09:02,736 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 15:09:02,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 137 events. 46/137 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 450 event pairs, 32 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 347. Up to 83 conditions per place. [2022-12-13 15:09:02,737 INFO L137 encePairwiseOnDemand]: 384/387 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-12-13 15:09:02,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 127 flow [2022-12-13 15:09:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:09:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-12-13 15:09:02,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4608096468561585 [2022-12-13 15:09:02,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-12-13 15:09:02,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-12-13 15:09:02,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:02,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-12-13 15:09:02,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,742 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 3 states and 535 transitions. [2022-12-13 15:09:02,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 127 flow [2022-12-13 15:09:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 113 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 15:09:02,744 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 61 flow [2022-12-13 15:09:02,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-13 15:09:02,744 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2022-12-13 15:09:02,744 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 61 flow [2022-12-13 15:09:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:02,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:02,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:02,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:09:02,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1317722419, now seen corresponding path program 3 times [2022-12-13 15:09:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:02,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500404830] [2022-12-13 15:09:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:03,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500404830] [2022-12-13 15:09:03,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500404830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:03,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:03,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:09:03,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351872775] [2022-12-13 15:09:03,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:03,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:09:03,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:03,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:09:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:09:03,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 387 [2022-12-13 15:09:03,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 61 flow. Second operand has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:03,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:03,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 387 [2022-12-13 15:09:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:03,750 INFO L130 PetriNetUnfolder]: 63/184 cut-off events. [2022-12-13 15:09:03,750 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 15:09:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 184 events. 63/184 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 704 event pairs, 25 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 439. Up to 73 conditions per place. [2022-12-13 15:09:03,751 INFO L137 encePairwiseOnDemand]: 380/387 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2022-12-13 15:09:03,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 228 flow [2022-12-13 15:09:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:09:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:09:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 995 transitions. [2022-12-13 15:09:03,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42850990525409133 [2022-12-13 15:09:03,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 995 transitions. [2022-12-13 15:09:03,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 995 transitions. [2022-12-13 15:09:03,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:03,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 995 transitions. [2022-12-13 15:09:03,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.83333333333334) internal successors, (995), 6 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:03,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:03,762 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:03,762 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 61 flow. Second operand 6 states and 995 transitions. [2022-12-13 15:09:03,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 228 flow [2022-12-13 15:09:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:09:03,764 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 110 flow [2022-12-13 15:09:03,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-12-13 15:09:03,764 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-13 15:09:03,765 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 110 flow [2022-12-13 15:09:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:03,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:03,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:09:03,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1523412167, now seen corresponding path program 1 times [2022-12-13 15:09:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:03,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106822859] [2022-12-13 15:09:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:04,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106822859] [2022-12-13 15:09:04,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106822859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:04,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:04,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:09:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139794913] [2022-12-13 15:09:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:04,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:09:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:09:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:09:06,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 387 [2022-12-13 15:09:06,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 110 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:06,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:06,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 387 [2022-12-13 15:09:06,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:06,899 INFO L130 PetriNetUnfolder]: 121/309 cut-off events. [2022-12-13 15:09:06,900 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-13 15:09:06,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 309 events. 121/309 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 25 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 821. Up to 177 conditions per place. [2022-12-13 15:09:06,901 INFO L137 encePairwiseOnDemand]: 375/387 looper letters, 55 selfloop transitions, 11 changer transitions 16/82 dead transitions. [2022-12-13 15:09:06,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 465 flow [2022-12-13 15:09:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:09:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:09:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1553 transitions. [2022-12-13 15:09:06,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4012919896640827 [2022-12-13 15:09:06,903 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1553 transitions. [2022-12-13 15:09:06,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1553 transitions. [2022-12-13 15:09:06,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:06,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1553 transitions. [2022-12-13 15:09:06,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.3) internal successors, (1553), 10 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:06,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:06,910 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:06,910 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 110 flow. Second operand 10 states and 1553 transitions. [2022-12-13 15:09:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 465 flow [2022-12-13 15:09:06,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:09:06,912 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 196 flow [2022-12-13 15:09:06,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2022-12-13 15:09:06,912 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-13 15:09:06,912 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 196 flow [2022-12-13 15:09:06,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:06,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:06,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:06,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:09:06,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1478352805, now seen corresponding path program 2 times [2022-12-13 15:09:06,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452001121] [2022-12-13 15:09:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:08,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:08,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452001121] [2022-12-13 15:09:08,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452001121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:08,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:08,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:09:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769193300] [2022-12-13 15:09:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:08,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:09:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:09:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:09:09,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 387 [2022-12-13 15:09:09,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 196 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:09,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:09,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 387 [2022-12-13 15:09:09,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:09,794 INFO L130 PetriNetUnfolder]: 119/322 cut-off events. [2022-12-13 15:09:09,794 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-12-13 15:09:09,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 322 events. 119/322 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1446 event pairs, 29 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 1044. Up to 188 conditions per place. [2022-12-13 15:09:09,796 INFO L137 encePairwiseOnDemand]: 374/387 looper letters, 65 selfloop transitions, 25 changer transitions 2/92 dead transitions. [2022-12-13 15:09:09,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 615 flow [2022-12-13 15:09:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:09:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:09:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1704 transitions. [2022-12-13 15:09:09,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4002818886539817 [2022-12-13 15:09:09,799 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1704 transitions. [2022-12-13 15:09:09,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1704 transitions. [2022-12-13 15:09:09,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:09,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1704 transitions. [2022-12-13 15:09:09,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.9090909090909) internal successors, (1704), 11 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:09,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:09,806 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:09,806 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 196 flow. Second operand 11 states and 1704 transitions. [2022-12-13 15:09:09,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 615 flow [2022-12-13 15:09:09,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 605 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 15:09:09,809 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 372 flow [2022-12-13 15:09:09,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=372, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2022-12-13 15:09:09,810 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-13 15:09:09,810 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 372 flow [2022-12-13 15:09:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:09,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:09,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:09:09,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1919906835, now seen corresponding path program 3 times [2022-12-13 15:09:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:09,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940113083] [2022-12-13 15:09:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:09,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940113083] [2022-12-13 15:09:10,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940113083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:10,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:10,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:09:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852405996] [2022-12-13 15:09:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:09:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:09:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:09:11,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 387 [2022-12-13 15:09:11,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 372 flow. Second operand has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:11,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:11,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 387 [2022-12-13 15:09:11,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:12,277 INFO L130 PetriNetUnfolder]: 134/371 cut-off events. [2022-12-13 15:09:12,277 INFO L131 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2022-12-13 15:09:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 371 events. 134/371 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1783 event pairs, 63 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 1371. Up to 301 conditions per place. [2022-12-13 15:09:12,278 INFO L137 encePairwiseOnDemand]: 376/387 looper letters, 57 selfloop transitions, 7 changer transitions 27/91 dead transitions. [2022-12-13 15:09:12,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 764 flow [2022-12-13 15:09:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:09:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:09:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1537 transitions. [2022-12-13 15:09:12,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3971576227390181 [2022-12-13 15:09:12,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1537 transitions. [2022-12-13 15:09:12,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1537 transitions. [2022-12-13 15:09:12,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:12,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1537 transitions. [2022-12-13 15:09:12,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.7) internal successors, (1537), 10 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:12,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:12,287 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:12,287 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 372 flow. Second operand 10 states and 1537 transitions. [2022-12-13 15:09:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 764 flow [2022-12-13 15:09:12,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 742 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 15:09:12,292 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 428 flow [2022-12-13 15:09:12,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=428, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2022-12-13 15:09:12,292 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2022-12-13 15:09:12,292 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 428 flow [2022-12-13 15:09:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:12,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:12,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:09:12,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:12,293 INFO L85 PathProgramCache]: Analyzing trace with hash -260627439, now seen corresponding path program 4 times [2022-12-13 15:09:12,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:12,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864551326] [2022-12-13 15:09:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:13,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864551326] [2022-12-13 15:09:13,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864551326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:13,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:13,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:09:13,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348162956] [2022-12-13 15:09:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:09:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:09:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:09:14,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 387 [2022-12-13 15:09:14,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 428 flow. Second operand has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:14,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:14,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 387 [2022-12-13 15:09:14,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:15,158 INFO L130 PetriNetUnfolder]: 125/344 cut-off events. [2022-12-13 15:09:15,158 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-12-13 15:09:15,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 344 events. 125/344 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1604 event pairs, 36 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1347. Up to 225 conditions per place. [2022-12-13 15:09:15,160 INFO L137 encePairwiseOnDemand]: 374/387 looper letters, 73 selfloop transitions, 24 changer transitions 1/98 dead transitions. [2022-12-13 15:09:15,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 828 flow [2022-12-13 15:09:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:09:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:09:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1551 transitions. [2022-12-13 15:09:15,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4007751937984496 [2022-12-13 15:09:15,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1551 transitions. [2022-12-13 15:09:15,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1551 transitions. [2022-12-13 15:09:15,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:15,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1551 transitions. [2022-12-13 15:09:15,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.1) internal successors, (1551), 10 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:15,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:15,168 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:15,168 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 428 flow. Second operand 10 states and 1551 transitions. [2022-12-13 15:09:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 828 flow [2022-12-13 15:09:15,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 794 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-12-13 15:09:15,172 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 511 flow [2022-12-13 15:09:15,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=511, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2022-12-13 15:09:15,173 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2022-12-13 15:09:15,173 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 511 flow [2022-12-13 15:09:15,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:15,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:15,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:15,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:09:15,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2123761775, now seen corresponding path program 5 times [2022-12-13 15:09:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243476561] [2022-12-13 15:09:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243476561] [2022-12-13 15:09:16,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243476561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:16,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:16,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:09:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261698048] [2022-12-13 15:09:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:09:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:09:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:09:17,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 387 [2022-12-13 15:09:17,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 511 flow. Second operand has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:17,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:17,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 387 [2022-12-13 15:09:17,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:17,880 INFO L130 PetriNetUnfolder]: 139/389 cut-off events. [2022-12-13 15:09:17,880 INFO L131 PetriNetUnfolder]: For 1005/1005 co-relation queries the response was YES. [2022-12-13 15:09:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 389 events. 139/389 cut-off events. For 1005/1005 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1938 event pairs, 60 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 1546. Up to 304 conditions per place. [2022-12-13 15:09:17,882 INFO L137 encePairwiseOnDemand]: 377/387 looper letters, 65 selfloop transitions, 8 changer transitions 27/100 dead transitions. [2022-12-13 15:09:17,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 936 flow [2022-12-13 15:09:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:09:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:09:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1540 transitions. [2022-12-13 15:09:17,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3979328165374677 [2022-12-13 15:09:17,885 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1540 transitions. [2022-12-13 15:09:17,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1540 transitions. [2022-12-13 15:09:17,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:17,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1540 transitions. [2022-12-13 15:09:17,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:17,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:17,890 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:17,890 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 511 flow. Second operand 10 states and 1540 transitions. [2022-12-13 15:09:17,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 936 flow [2022-12-13 15:09:17,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 862 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-12-13 15:09:17,894 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 518 flow [2022-12-13 15:09:17,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2022-12-13 15:09:17,894 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2022-12-13 15:09:17,895 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 518 flow [2022-12-13 15:09:17,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.5) internal successors, (2093), 14 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:17,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:17,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:09:17,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -869203615, now seen corresponding path program 4 times [2022-12-13 15:09:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:17,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504017739] [2022-12-13 15:09:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504017739] [2022-12-13 15:09:18,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504017739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:18,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:18,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:09:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43545952] [2022-12-13 15:09:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:09:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:09:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:09:18,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 387 [2022-12-13 15:09:18,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 158.71428571428572) internal successors, (1111), 7 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:18,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:18,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 387 [2022-12-13 15:09:18,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:18,634 INFO L130 PetriNetUnfolder]: 121/402 cut-off events. [2022-12-13 15:09:18,634 INFO L131 PetriNetUnfolder]: For 1151/1153 co-relation queries the response was YES. [2022-12-13 15:09:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 402 events. 121/402 cut-off events. For 1151/1153 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2348 event pairs, 32 based on Foata normal form. 5/404 useless extension candidates. Maximal degree in co-relation 1556. Up to 111 conditions per place. [2022-12-13 15:09:18,638 INFO L137 encePairwiseOnDemand]: 379/387 looper letters, 56 selfloop transitions, 35 changer transitions 6/103 dead transitions. [2022-12-13 15:09:18,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 939 flow [2022-12-13 15:09:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:09:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:09:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2022-12-13 15:09:18,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42463393626184326 [2022-12-13 15:09:18,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2022-12-13 15:09:18,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2022-12-13 15:09:18,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:18,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2022-12-13 15:09:18,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:18,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:18,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:18,643 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 518 flow. Second operand 6 states and 986 transitions. [2022-12-13 15:09:18,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 939 flow [2022-12-13 15:09:18,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 902 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-13 15:09:18,647 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 664 flow [2022-12-13 15:09:18,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2022-12-13 15:09:18,648 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2022-12-13 15:09:18,648 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 664 flow [2022-12-13 15:09:18,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.71428571428572) internal successors, (1111), 7 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:18,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:18,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:18,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:09:18,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1831914219, now seen corresponding path program 5 times [2022-12-13 15:09:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306425508] [2022-12-13 15:09:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:18,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306425508] [2022-12-13 15:09:18,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306425508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:18,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:18,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:09:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603998216] [2022-12-13 15:09:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:09:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:09:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:09:19,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 387 [2022-12-13 15:09:19,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 664 flow. Second operand has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:19,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:09:19,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 387 [2022-12-13 15:09:19,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:09:19,375 INFO L130 PetriNetUnfolder]: 111/388 cut-off events. [2022-12-13 15:09:19,375 INFO L131 PetriNetUnfolder]: For 1255/1259 co-relation queries the response was YES. [2022-12-13 15:09:19,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 388 events. 111/388 cut-off events. For 1255/1259 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2258 event pairs, 38 based on Foata normal form. 7/391 useless extension candidates. Maximal degree in co-relation 1566. Up to 128 conditions per place. [2022-12-13 15:09:19,376 INFO L137 encePairwiseOnDemand]: 380/387 looper letters, 62 selfloop transitions, 23 changer transitions 13/102 dead transitions. [2022-12-13 15:09:19,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 999 flow [2022-12-13 15:09:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:09:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:09:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1001 transitions. [2022-12-13 15:09:19,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43109388458225667 [2022-12-13 15:09:19,378 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1001 transitions. [2022-12-13 15:09:19,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1001 transitions. [2022-12-13 15:09:19,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:09:19,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1001 transitions. [2022-12-13 15:09:19,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 387.0) internal successors, (2709), 7 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:19,381 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 664 flow. Second operand 6 states and 1001 transitions. [2022-12-13 15:09:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 999 flow [2022-12-13 15:09:19,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 961 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 15:09:19,386 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 647 flow [2022-12-13 15:09:19,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=647, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2022-12-13 15:09:19,387 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2022-12-13 15:09:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 647 flow [2022-12-13 15:09:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:19,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:09:19,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:19,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:09:19,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:09:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash -868448005, now seen corresponding path program 6 times [2022-12-13 15:09:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:19,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429085778] [2022-12-13 15:09:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:19,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:09:19,891 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-13 15:09:19,893 INFO L158 Benchmark]: Toolchain (without parser) took 33017.46ms. Allocated memory was 121.6MB in the beginning and 255.9MB in the end (delta: 134.2MB). Free memory was 82.2MB in the beginning and 101.9MB in the end (delta: -19.7MB). Peak memory consumption was 155.7MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,893 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:09:19,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.83ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.2MB in the beginning and 95.6MB in the end (delta: -13.4MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.08ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 92.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,894 INFO L158 Benchmark]: Boogie Preprocessor took 38.87ms. Allocated memory is still 146.8MB. Free memory was 92.7MB in the beginning and 89.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,894 INFO L158 Benchmark]: RCFGBuilder took 508.08ms. Allocated memory is still 146.8MB. Free memory was 89.3MB in the beginning and 66.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,895 INFO L158 Benchmark]: TraceAbstraction took 31706.77ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 65.4MB in the beginning and 101.9MB in the end (delta: -36.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2022-12-13 15:09:19,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.83ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.2MB in the beginning and 95.6MB in the end (delta: -13.4MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.08ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 92.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.87ms. Allocated memory is still 146.8MB. Free memory was 92.7MB in the beginning and 89.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 508.08ms. Allocated memory is still 146.8MB. Free memory was 89.3MB in the beginning and 66.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 31706.77ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 65.4MB in the beginning and 101.9MB in the end (delta: -36.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.9s, 180 PlacesBefore, 36 PlacesAfterwards, 180 TransitionsBefore, 32 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 9 FixpointIterations, 111 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 193 TotalNumberOfCompositions, 6201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2445, independent: 2195, independent conditional: 0, independent unconditional: 2195, dependent: 250, dependent conditional: 0, dependent unconditional: 250, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1392, independent: 1355, independent conditional: 0, independent unconditional: 1355, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2445, independent: 840, independent conditional: 0, independent unconditional: 840, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 1392, unknown conditional: 0, unknown unconditional: 1392] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-13 15:09:19,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:09:21,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:09:21,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:09:21,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:09:21,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:09:21,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:09:21,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:09:21,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:09:21,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:09:21,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:09:21,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:09:21,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:09:21,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:09:21,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:09:21,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:09:21,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:09:21,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:09:21,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:09:21,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:09:21,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:09:21,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:09:21,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:09:21,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:09:21,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:09:21,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:09:21,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:09:21,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:09:21,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:09:21,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:09:21,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:09:21,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:09:21,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:09:21,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:09:21,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:09:21,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:09:21,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:09:21,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:09:21,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:09:21,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:09:21,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:09:21,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:09:21,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 15:09:21,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:09:21,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:09:21,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:09:21,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:09:21,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:09:21,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:09:21,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:09:21,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:09:21,400 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:09:21,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:09:21,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:09:21,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:09:21,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:09:21,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:09:21,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 15:09:21,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:09:21,403 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-12-13 15:09:21,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:09:21,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:09:21,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:09:21,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:09:21,667 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:09:21,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 15:09:24,218 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:09:24,456 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:09:24,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 15:09:24,476 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/aaab564d5/926646bcdaf642a780b9763288e2cf1d/FLAG03b567626 [2022-12-13 15:09:24,772 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/data/aaab564d5/926646bcdaf642a780b9763288e2cf1d [2022-12-13 15:09:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:09:24,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:09:24,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:09:24,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:09:24,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:09:24,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:09:24" (1/1) ... [2022-12-13 15:09:24,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d258c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:24, skipping insertion in model container [2022-12-13 15:09:24,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:09:24" (1/1) ... [2022-12-13 15:09:24,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:09:24,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:09:25,308 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 15:09:25,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:09:25,355 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 15:09:25,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:09:25,391 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 15:09:25,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:09:25,402 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:09:25,428 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 15:09:25,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:09:25,519 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:09:25,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25 WrapperNode [2022-12-13 15:09:25,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:09:25,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:09:25,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:09:25,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:09:25,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,575 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2022-12-13 15:09:25,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:09:25,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:09:25,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:09:25,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:09:25,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:09:25,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:09:25,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:09:25,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:09:25,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (1/1) ... [2022-12-13 15:09:25,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:09:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:09:25,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:09:25,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:09:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:09:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:09:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 15:09:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-13 15:09:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-13 15:09:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:09:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 15:09:25,680 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:09:25,920 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:09:25,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:09:26,235 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:09:26,241 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:09:26,241 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:09:26,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:09:26 BoogieIcfgContainer [2022-12-13 15:09:26,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:09:26,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:09:26,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:09:26,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:09:26,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:09:24" (1/3) ... [2022-12-13 15:09:26,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3c5061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:09:26, skipping insertion in model container [2022-12-13 15:09:26,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:25" (2/3) ... [2022-12-13 15:09:26,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3c5061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:09:26, skipping insertion in model container [2022-12-13 15:09:26,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:09:26" (3/3) ... [2022-12-13 15:09:26,249 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-12-13 15:09:26,255 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:09:26,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:09:26,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 15:09:26,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:09:26,323 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:09:26,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 192 transitions, 400 flow [2022-12-13 15:09:26,422 INFO L130 PetriNetUnfolder]: 10/236 cut-off events. [2022-12-13 15:09:26,423 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:09:26,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 236 events. 10/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2022-12-13 15:09:26,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 192 transitions, 400 flow [2022-12-13 15:09:26,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 178 transitions, 368 flow [2022-12-13 15:09:26,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:09:26,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 178 transitions, 368 flow [2022-12-13 15:09:26,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 178 transitions, 368 flow [2022-12-13 15:09:26,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 178 transitions, 368 flow [2022-12-13 15:09:26,489 INFO L130 PetriNetUnfolder]: 7/213 cut-off events. [2022-12-13 15:09:26,489 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:09:26,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 7/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2022-12-13 15:09:26,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 2600 [2022-12-13 15:10:31,746 WARN L233 SmtUtils]: Spent 23.40s on a formula simplification. DAG size of input: 226 DAG size of output: 225 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:10:43,529 WARN L233 SmtUtils]: Spent 11.78s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:11:04,703 WARN L233 SmtUtils]: Spent 21.17s on a formula simplification. DAG size of input: 222 DAG size of output: 221 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:11:15,627 WARN L233 SmtUtils]: Spent 10.92s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:11:28,181 WARN L233 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:11:38,440 WARN L233 SmtUtils]: Spent 10.26s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:12:19,177 WARN L233 SmtUtils]: Spent 40.73s on a formula simplification. DAG size of input: 162 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:12:32,057 WARN L233 SmtUtils]: Spent 12.88s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:14:45,300 WARN L233 SmtUtils]: Spent 2.22m on a formula simplification. DAG size of input: 279 DAG size of output: 271 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:15:44,407 WARN L233 SmtUtils]: Spent 59.10s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:18:09,422 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 284 DAG size of output: 273 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:19:12,561 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:19:36,629 WARN L233 SmtUtils]: Spent 24.06s on a formula simplification. DAG size of input: 237 DAG size of output: 229 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:19:47,782 WARN L233 SmtUtils]: Spent 11.15s on a formula simplification that was a NOOP. DAG size: 213 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:20:14,405 WARN L233 SmtUtils]: Spent 26.62s on a formula simplification. DAG size of input: 242 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:20:27,263 WARN L233 SmtUtils]: Spent 12.86s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:20:27,266 INFO L134 LiptonReduction]: Checked pairs total: 6188 [2022-12-13 15:20:27,266 INFO L136 LiptonReduction]: Total number of compositions: 198 [2022-12-13 15:20:27,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:20:27,282 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7418dfc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:20:27,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 15:20:27,283 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:20:27,283 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:20:27,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:27,284 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:20:27,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2022-12-13 15:20:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:27,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118382753] [2022-12-13 15:20:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:27,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:27,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 15:20:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:27,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:20:27,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:27,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:27,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:27,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118382753] [2022-12-13 15:20:27,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118382753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:27,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:27,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:20:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627754101] [2022-12-13 15:20:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:20:27,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:20:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:20:27,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 390 [2022-12-13 15:20:27,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:27,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:27,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 390 [2022-12-13 15:20:27,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:28,434 INFO L130 PetriNetUnfolder]: 217/422 cut-off events. [2022-12-13 15:20:28,434 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 15:20:28,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 422 events. 217/422 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1994 event pairs, 216 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 741. Up to 391 conditions per place. [2022-12-13 15:20:28,438 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-12-13 15:20:28,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2022-12-13 15:20:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:20:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:20:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 380 transitions. [2022-12-13 15:20:28,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2022-12-13 15:20:28,451 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 380 transitions. [2022-12-13 15:20:28,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 380 transitions. [2022-12-13 15:20:28,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:28,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 380 transitions. [2022-12-13 15:20:28,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:28,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:28,461 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:28,463 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 380 transitions. [2022-12-13 15:20:28,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2022-12-13 15:20:28,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:20:28,466 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2022-12-13 15:20:28,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-12-13 15:20:28,470 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2022-12-13 15:20:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2022-12-13 15:20:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:28,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:28,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:20:28,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:20:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:28,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 20462809, now seen corresponding path program 1 times [2022-12-13 15:20:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672620758] [2022-12-13 15:20:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:28,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:28,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:28,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 15:20:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:28,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:20:28,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:29,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:29,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:29,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:29,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-13 15:20:29,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:20:29,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 89 [2022-12-13 15:20:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:29,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:29,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672620758] [2022-12-13 15:20:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672620758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:29,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:29,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:20:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487765543] [2022-12-13 15:20:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:20:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:20:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:20:29,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 390 [2022-12-13 15:20:29,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:29,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:29,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 390 [2022-12-13 15:20:29,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:31,361 INFO L130 PetriNetUnfolder]: 344/671 cut-off events. [2022-12-13 15:20:31,361 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:20:31,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 671 events. 344/671 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3491 event pairs, 184 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 1289. Up to 453 conditions per place. [2022-12-13 15:20:31,364 INFO L137 encePairwiseOnDemand]: 382/390 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2022-12-13 15:20:31,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2022-12-13 15:20:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:20:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:20:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 15:20:31,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44700854700854703 [2022-12-13 15:20:31,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 15:20:31,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 15:20:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 15:20:31,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:31,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:31,375 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 523 transitions. [2022-12-13 15:20:31,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2022-12-13 15:20:31,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:20:31,376 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2022-12-13 15:20:31,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-12-13 15:20:31,376 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-12-13 15:20:31,377 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2022-12-13 15:20:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:31,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:31,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:20:31,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 15:20:31,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:31,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 634347218, now seen corresponding path program 1 times [2022-12-13 15:20:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:31,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921726267] [2022-12-13 15:20:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:31,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:31,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:31,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 15:20:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 15:20:31,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:31,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:31,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:31,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:31,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-13 15:20:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:31,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:31,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:31,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921726267] [2022-12-13 15:20:31,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921726267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:31,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:31,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:20:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377194236] [2022-12-13 15:20:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:31,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:20:31,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:20:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:20:32,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 390 [2022-12-13 15:20:32,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:32,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:32,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 390 [2022-12-13 15:20:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:34,303 INFO L130 PetriNetUnfolder]: 483/889 cut-off events. [2022-12-13 15:20:34,303 INFO L131 PetriNetUnfolder]: For 370/378 co-relation queries the response was YES. [2022-12-13 15:20:34,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 889 events. 483/889 cut-off events. For 370/378 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4579 event pairs, 259 based on Foata normal form. 26/911 useless extension candidates. Maximal degree in co-relation 2323. Up to 669 conditions per place. [2022-12-13 15:20:34,307 INFO L137 encePairwiseOnDemand]: 383/390 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2022-12-13 15:20:34,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2022-12-13 15:20:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:20:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:20:34,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2022-12-13 15:20:34,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4478632478632479 [2022-12-13 15:20:34,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2022-12-13 15:20:34,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2022-12-13 15:20:34,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:34,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2022-12-13 15:20:34,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:34,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:34,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:34,313 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 524 transitions. [2022-12-13 15:20:34,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2022-12-13 15:20:34,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:20:34,316 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2022-12-13 15:20:34,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2022-12-13 15:20:34,316 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-12-13 15:20:34,316 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2022-12-13 15:20:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:34,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:34,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:34,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 15:20:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:34,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1393304018, now seen corresponding path program 1 times [2022-12-13 15:20:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135795873] [2022-12-13 15:20:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:34,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:34,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:34,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:34,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 15:20:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:34,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:20:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:34,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:34,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:34,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135795873] [2022-12-13 15:20:34,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135795873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:34,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:34,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:20:34,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029891297] [2022-12-13 15:20:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:20:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:20:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:20:34,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 390 [2022-12-13 15:20:34,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:34,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:34,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 390 [2022-12-13 15:20:34,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:35,934 INFO L130 PetriNetUnfolder]: 101/208 cut-off events. [2022-12-13 15:20:35,935 INFO L131 PetriNetUnfolder]: For 170/190 co-relation queries the response was YES. [2022-12-13 15:20:35,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 208 events. 101/208 cut-off events. For 170/190 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 756 event pairs, 54 based on Foata normal form. 22/219 useless extension candidates. Maximal degree in co-relation 530. Up to 137 conditions per place. [2022-12-13 15:20:35,935 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-12-13 15:20:35,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2022-12-13 15:20:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:20:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:20:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 15:20:35,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 15:20:35,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 15:20:35,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 15:20:35,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:35,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 15:20:35,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:35,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:35,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:35,945 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 546 transitions. [2022-12-13 15:20:35,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2022-12-13 15:20:35,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 15:20:35,946 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 60 flow [2022-12-13 15:20:35,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 15:20:35,947 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2022-12-13 15:20:35,947 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 60 flow [2022-12-13 15:20:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:35,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:35,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:35,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 15:20:36,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:36,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash 503253360, now seen corresponding path program 1 times [2022-12-13 15:20:36,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:36,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516508641] [2022-12-13 15:20:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:36,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:36,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:36,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 15:20:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:36,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:20:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:36,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-12-13 15:20:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:36,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:36,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:36,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516508641] [2022-12-13 15:20:36,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516508641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:36,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:36,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:20:36,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812933967] [2022-12-13 15:20:36,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:36,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:20:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:20:36,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:20:36,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2022-12-13 15:20:36,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:36,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:36,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2022-12-13 15:20:36,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:37,439 INFO L130 PetriNetUnfolder]: 47/141 cut-off events. [2022-12-13 15:20:37,439 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 15:20:37,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 141 events. 47/141 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 470 event pairs, 14 based on Foata normal form. 15/155 useless extension candidates. Maximal degree in co-relation 324. Up to 76 conditions per place. [2022-12-13 15:20:37,440 INFO L137 encePairwiseOnDemand]: 385/390 looper letters, 21 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2022-12-13 15:20:37,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 132 flow [2022-12-13 15:20:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:20:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:20:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2022-12-13 15:20:37,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2022-12-13 15:20:37,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2022-12-13 15:20:37,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2022-12-13 15:20:37,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:37,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2022-12-13 15:20:37,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:37,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:37,448 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:37,448 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 60 flow. Second operand 4 states and 712 transitions. [2022-12-13 15:20:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 132 flow [2022-12-13 15:20:37,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 15:20:37,449 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2022-12-13 15:20:37,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 15:20:37,450 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2022-12-13 15:20:37,450 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2022-12-13 15:20:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:37,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:37,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 15:20:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:37,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -417132736, now seen corresponding path program 2 times [2022-12-13 15:20:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:37,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548123519] [2022-12-13 15:20:37,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:20:37,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:37,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:37,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 15:20:38,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:20:38,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:20:38,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:20:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:20:38,100 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:20:38,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2022-12-13 15:20:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 15:20:38,209 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:20:38,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:20:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:20:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:38,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:38,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:38,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:20:38,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:20:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:39,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:20:39,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:20:39,733 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:20:39,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:20:39,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 219 [2022-12-13 15:20:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:39,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:39,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548123519] [2022-12-13 15:20:39,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548123519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:39,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:39,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:20:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528594895] [2022-12-13 15:20:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:20:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:39,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:20:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:20:43,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:20:43,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:43,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:43,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:20:43,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:20:48,907 INFO L130 PetriNetUnfolder]: 97/238 cut-off events. [2022-12-13 15:20:48,907 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 15:20:48,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 238 events. 97/238 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 858 event pairs, 26 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 538. Up to 139 conditions per place. [2022-12-13 15:20:48,908 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 55 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2022-12-13 15:20:48,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 73 transitions, 329 flow [2022-12-13 15:20:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:20:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:20:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1669 transitions. [2022-12-13 15:20:48,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38904428904428906 [2022-12-13 15:20:48,912 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1669 transitions. [2022-12-13 15:20:48,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1669 transitions. [2022-12-13 15:20:48,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:20:48,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1669 transitions. [2022-12-13 15:20:48,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.72727272727272) internal successors, (1669), 11 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:48,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:48,921 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:48,921 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 11 states and 1669 transitions. [2022-12-13 15:20:48,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 73 transitions, 329 flow [2022-12-13 15:20:48,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 73 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:20:48,924 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 186 flow [2022-12-13 15:20:48,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2022-12-13 15:20:48,924 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-13 15:20:48,925 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 186 flow [2022-12-13 15:20:48,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:48,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:48,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:48,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 15:20:49,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:49,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:20:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1759687338, now seen corresponding path program 3 times [2022-12-13 15:20:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:49,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232821981] [2022-12-13 15:20:49,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:20:49,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:49,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:49,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 15:20:49,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 15:20:49,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:20:49,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:20:49,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:49,564 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:20:49,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:20:49,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:20:49,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:20:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:49,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:20:50,017 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:20:50,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:20:50,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:50,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:50,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:20:50,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:20:50,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:20:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:20:50,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:20:50,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:20:51,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:20:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:51,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:51,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:51,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232821981] [2022-12-13 15:20:51,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232821981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:51,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:51,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:20:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677470811] [2022-12-13 15:20:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:20:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:20:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:20:55,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:20:55,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 186 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:55,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:55,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:20:55,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:02,681 INFO L130 PetriNetUnfolder]: 112/282 cut-off events. [2022-12-13 15:21:02,681 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2022-12-13 15:21:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 282 events. 112/282 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1107 event pairs, 54 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 844. Up to 220 conditions per place. [2022-12-13 15:21:02,682 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 58 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2022-12-13 15:21:02,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 480 flow [2022-12-13 15:21:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:21:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:21:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1653 transitions. [2022-12-13 15:21:02,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3853146853146853 [2022-12-13 15:21:02,686 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1653 transitions. [2022-12-13 15:21:02,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1653 transitions. [2022-12-13 15:21:02,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:02,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1653 transitions. [2022-12-13 15:21:02,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.27272727272728) internal successors, (1653), 11 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:02,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:02,692 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:02,692 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 186 flow. Second operand 11 states and 1653 transitions. [2022-12-13 15:21:02,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 480 flow [2022-12-13 15:21:02,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:21:02,694 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 346 flow [2022-12-13 15:21:02,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2022-12-13 15:21:02,694 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2022-12-13 15:21:02,694 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 346 flow [2022-12-13 15:21:02,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:02,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:02,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:02,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 15:21:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:02,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2142290249, now seen corresponding path program 1 times [2022-12-13 15:21:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:02,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482569759] [2022-12-13 15:21:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:02,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:02,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:02,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:02,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 15:21:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:03,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 15:21:03,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:03,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 15:21:03,392 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 15:21:03,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 15:21:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:03,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:03,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:03,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:03,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-13 15:21:03,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-12-13 15:21:03,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 89 [2022-12-13 15:21:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:03,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:03,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:03,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482569759] [2022-12-13 15:21:03,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482569759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:03,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:03,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:21:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547501552] [2022-12-13 15:21:03,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:03,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:21:03,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:21:03,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:21:05,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2022-12-13 15:21:05,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:05,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:05,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2022-12-13 15:21:05,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:07,638 INFO L130 PetriNetUnfolder]: 108/311 cut-off events. [2022-12-13 15:21:07,638 INFO L131 PetriNetUnfolder]: For 429/433 co-relation queries the response was YES. [2022-12-13 15:21:07,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 311 events. 108/311 cut-off events. For 429/433 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1488 event pairs, 31 based on Foata normal form. 3/310 useless extension candidates. Maximal degree in co-relation 1044. Up to 99 conditions per place. [2022-12-13 15:21:07,640 INFO L137 encePairwiseOnDemand]: 383/390 looper letters, 60 selfloop transitions, 15 changer transitions 10/89 dead transitions. [2022-12-13 15:21:07,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 671 flow [2022-12-13 15:21:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:21:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:21:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 977 transitions. [2022-12-13 15:21:07,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41752136752136754 [2022-12-13 15:21:07,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 977 transitions. [2022-12-13 15:21:07,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 977 transitions. [2022-12-13 15:21:07,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:07,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 977 transitions. [2022-12-13 15:21:07,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,646 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,646 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 346 flow. Second operand 6 states and 977 transitions. [2022-12-13 15:21:07,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 671 flow [2022-12-13 15:21:07,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 663 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:21:07,650 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 345 flow [2022-12-13 15:21:07,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2022-12-13 15:21:07,651 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2022-12-13 15:21:07,651 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 345 flow [2022-12-13 15:21:07,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:07,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:07,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-13 15:21:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:07,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 703163516, now seen corresponding path program 4 times [2022-12-13 15:21:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:07,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374366971] [2022-12-13 15:21:07,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:21:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:07,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:07,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 15:21:08,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:21:08,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:21:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:21:08,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:08,278 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:21:08,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:21:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:21:08,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:08,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:08,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:08,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:08,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:21:09,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:21:09,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:09,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:21:09,546 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:21:09,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:21:09,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:21:09,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:21:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:10,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:10,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:10,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374366971] [2022-12-13 15:21:10,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374366971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:10,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:10,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:21:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41057553] [2022-12-13 15:21:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:10,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:21:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:21:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:21:13,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:21:13,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 345 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:13,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:13,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:21:13,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:21,005 INFO L130 PetriNetUnfolder]: 126/331 cut-off events. [2022-12-13 15:21:21,005 INFO L131 PetriNetUnfolder]: For 662/662 co-relation queries the response was YES. [2022-12-13 15:21:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 331 events. 126/331 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1480 event pairs, 49 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 1188. Up to 224 conditions per place. [2022-12-13 15:21:21,007 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 69 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2022-12-13 15:21:21,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 748 flow [2022-12-13 15:21:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:21:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:21:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1670 transitions. [2022-12-13 15:21:21,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2022-12-13 15:21:21,010 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1670 transitions. [2022-12-13 15:21:21,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1670 transitions. [2022-12-13 15:21:21,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:21,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1670 transitions. [2022-12-13 15:21:21,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.8181818181818) internal successors, (1670), 11 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:21,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:21,016 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:21,016 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 345 flow. Second operand 11 states and 1670 transitions. [2022-12-13 15:21:21,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 748 flow [2022-12-13 15:21:21,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 675 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-12-13 15:21:21,020 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 432 flow [2022-12-13 15:21:21,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=432, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2022-12-13 15:21:21,020 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-12-13 15:21:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 432 flow [2022-12-13 15:21:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:21,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:21,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:21,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 15:21:21,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:21,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash -250605634, now seen corresponding path program 5 times [2022-12-13 15:21:21,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:21,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383422311] [2022-12-13 15:21:21,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:21:21,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:21,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:21,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:21,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 15:21:21,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:21:21,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:21:21,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:21:21,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:21:21,664 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:21:21,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2022-12-13 15:21:21,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 15:21:21,769 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:21:21,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:21:21,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:21,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:22,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:22,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:22,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:22,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:21:22,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:21:22,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:22,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:21:23,113 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:21:23,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:21:23,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:21:23,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 219 [2022-12-13 15:21:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:23,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:23,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383422311] [2022-12-13 15:21:23,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383422311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:23,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:23,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:21:23,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268687976] [2022-12-13 15:21:23,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:23,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:21:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:21:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:21:28,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:21:28,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 432 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:28,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:28,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:21:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:34,951 INFO L130 PetriNetUnfolder]: 127/337 cut-off events. [2022-12-13 15:21:34,952 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2022-12-13 15:21:34,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 337 events. 127/337 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1525 event pairs, 44 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 1250. Up to 240 conditions per place. [2022-12-13 15:21:34,953 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 69 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2022-12-13 15:21:34,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 781 flow [2022-12-13 15:21:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:21:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:21:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1668 transitions. [2022-12-13 15:21:34,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3888111888111888 [2022-12-13 15:21:34,957 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1668 transitions. [2022-12-13 15:21:34,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1668 transitions. [2022-12-13 15:21:34,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:34,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1668 transitions. [2022-12-13 15:21:34,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.63636363636363) internal successors, (1668), 11 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:34,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:34,963 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:34,963 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 432 flow. Second operand 11 states and 1668 transitions. [2022-12-13 15:21:34,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 781 flow [2022-12-13 15:21:34,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 749 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 15:21:34,966 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 499 flow [2022-12-13 15:21:34,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2022-12-13 15:21:34,966 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2022-12-13 15:21:34,967 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 499 flow [2022-12-13 15:21:34,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:34,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:34,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:34,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 15:21:35,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:35,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:35,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2019008805, now seen corresponding path program 2 times [2022-12-13 15:21:35,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:35,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227930010] [2022-12-13 15:21:35,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:21:35,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:35,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:35,175 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:35,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 15:21:35,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:21:35,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:21:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 15:21:35,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:35,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 15:21:35,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:35,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:35,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:35,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-13 15:21:35,933 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 15:21:35,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 15:21:36,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 89 [2022-12-13 15:21:36,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-12-13 15:21:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:36,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:36,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:36,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227930010] [2022-12-13 15:21:36,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227930010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:36,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:36,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:21:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405675202] [2022-12-13 15:21:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:21:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:21:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:21:37,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 390 [2022-12-13 15:21:37,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 155.71428571428572) internal successors, (1090), 7 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:37,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:37,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 390 [2022-12-13 15:21:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:40,066 INFO L130 PetriNetUnfolder]: 122/391 cut-off events. [2022-12-13 15:21:40,066 INFO L131 PetriNetUnfolder]: For 773/776 co-relation queries the response was YES. [2022-12-13 15:21:40,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 391 events. 122/391 cut-off events. For 773/776 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2185 event pairs, 24 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 1414. Up to 105 conditions per place. [2022-12-13 15:21:40,068 INFO L137 encePairwiseOnDemand]: 382/390 looper letters, 52 selfloop transitions, 31 changer transitions 12/101 dead transitions. [2022-12-13 15:21:40,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 887 flow [2022-12-13 15:21:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:21:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:21:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 967 transitions. [2022-12-13 15:21:40,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4132478632478632 [2022-12-13 15:21:40,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 967 transitions. [2022-12-13 15:21:40,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 967 transitions. [2022-12-13 15:21:40,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 967 transitions. [2022-12-13 15:21:40,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:40,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:40,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:40,074 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 499 flow. Second operand 6 states and 967 transitions. [2022-12-13 15:21:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 887 flow [2022-12-13 15:21:40,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 839 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 15:21:40,077 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 553 flow [2022-12-13 15:21:40,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=553, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2022-12-13 15:21:40,078 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2022-12-13 15:21:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 553 flow [2022-12-13 15:21:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 155.71428571428572) internal successors, (1090), 7 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:40,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:40,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:40,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:21:40,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:40,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1606729776, now seen corresponding path program 6 times [2022-12-13 15:21:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:40,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683734622] [2022-12-13 15:21:40,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:21:40,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:40,287 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:40,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 15:21:40,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 15:21:40,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:21:40,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 15:21:40,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:21:40,952 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:21:40,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2022-12-13 15:21:40,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:40,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 15:21:41,028 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:21:41,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:21:41,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:41,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:41,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:41,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:21:41,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:21:42,041 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:21:42,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:21:42,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:42,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:21:42,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:21:42,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:21:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:42,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:42,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:42,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683734622] [2022-12-13 15:21:42,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683734622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:42,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:42,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:21:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610833695] [2022-12-13 15:21:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:21:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:21:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:21:45,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:21:45,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 553 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:45,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:45,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:21:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:53,308 INFO L130 PetriNetUnfolder]: 149/425 cut-off events. [2022-12-13 15:21:53,308 INFO L131 PetriNetUnfolder]: For 1053/1053 co-relation queries the response was YES. [2022-12-13 15:21:53,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 425 events. 149/425 cut-off events. For 1053/1053 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2193 event pairs, 64 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 1666. Up to 313 conditions per place. [2022-12-13 15:21:53,310 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 71 selfloop transitions, 17 changer transitions 23/111 dead transitions. [2022-12-13 15:21:53,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 1044 flow [2022-12-13 15:21:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:21:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:21:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1668 transitions. [2022-12-13 15:21:53,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3888111888111888 [2022-12-13 15:21:53,313 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1668 transitions. [2022-12-13 15:21:53,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1668 transitions. [2022-12-13 15:21:53,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:53,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1668 transitions. [2022-12-13 15:21:53,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.63636363636363) internal successors, (1668), 11 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:53,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:53,318 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:53,318 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 553 flow. Second operand 11 states and 1668 transitions. [2022-12-13 15:21:53,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 1044 flow [2022-12-13 15:21:53,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 963 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-12-13 15:21:53,322 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 574 flow [2022-12-13 15:21:53,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=574, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2022-12-13 15:21:53,323 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2022-12-13 15:21:53,323 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 574 flow [2022-12-13 15:21:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:53,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:21:53,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:53,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 15:21:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:53,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:21:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2073356142, now seen corresponding path program 7 times [2022-12-13 15:21:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:21:53,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204318521] [2022-12-13 15:21:53,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:21:53,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:21:53,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:21:53,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:21:53,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 15:21:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:21:53,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:53,954 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:21:53,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:21:53,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:21:53,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:53,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:54,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:21:54,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:54,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:54,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:54,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:21:54,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:21:54,625 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:21:54,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:21:54,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:21:55,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:21:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:55,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:21:55,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:21:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:21:55,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:55,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:21:55,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204318521] [2022-12-13 15:21:55,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204318521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:55,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:21:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216903476] [2022-12-13 15:21:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:21:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:21:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:21:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:21:59,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:21:59,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:59,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:21:59,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:21:59,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:22:05,067 INFO L130 PetriNetUnfolder]: 143/412 cut-off events. [2022-12-13 15:22:05,067 INFO L131 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2022-12-13 15:22:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 412 events. 143/412 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2128 event pairs, 73 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1699. Up to 326 conditions per place. [2022-12-13 15:22:05,070 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 67 selfloop transitions, 11 changer transitions 28/106 dead transitions. [2022-12-13 15:22:05,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 1038 flow [2022-12-13 15:22:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:22:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:22:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1804 transitions. [2022-12-13 15:22:05,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3854700854700855 [2022-12-13 15:22:05,075 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1804 transitions. [2022-12-13 15:22:05,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1804 transitions. [2022-12-13 15:22:05,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:22:05,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1804 transitions. [2022-12-13 15:22:05,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.33333333333334) internal successors, (1804), 12 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:05,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:05,084 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:05,084 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 574 flow. Second operand 12 states and 1804 transitions. [2022-12-13 15:22:05,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 1038 flow [2022-12-13 15:22:05,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 954 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-12-13 15:22:05,091 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 583 flow [2022-12-13 15:22:05,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=583, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2022-12-13 15:22:05,091 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2022-12-13 15:22:05,091 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 583 flow [2022-12-13 15:22:05,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:05,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:22:05,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:05,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 15:22:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:05,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:22:05,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1085679077, now seen corresponding path program 3 times [2022-12-13 15:22:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:22:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565674224] [2022-12-13 15:22:05,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:22:05,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:05,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:22:05,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:22:05,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 15:22:05,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 15:22:05,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:05,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 15:22:05,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:05,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 15:22:05,895 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 15:22:05,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 15:22:05,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:05,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:05,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:05,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:05,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-13 15:22:06,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 89 [2022-12-13 15:22:06,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-12-13 15:22:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:06,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:06,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:22:06,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565674224] [2022-12-13 15:22:06,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565674224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:06,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:06,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:22:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152691638] [2022-12-13 15:22:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:22:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:22:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:22:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:22:07,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2022-12-13 15:22:07,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:07,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:22:07,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2022-12-13 15:22:07,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:22:11,817 INFO L130 PetriNetUnfolder]: 94/322 cut-off events. [2022-12-13 15:22:11,817 INFO L131 PetriNetUnfolder]: For 958/959 co-relation queries the response was YES. [2022-12-13 15:22:11,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 322 events. 94/322 cut-off events. For 958/959 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1685 event pairs, 22 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 1286. Up to 110 conditions per place. [2022-12-13 15:22:11,818 INFO L137 encePairwiseOnDemand]: 383/390 looper letters, 61 selfloop transitions, 19 changer transitions 11/95 dead transitions. [2022-12-13 15:22:11,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 878 flow [2022-12-13 15:22:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:22:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:22:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 982 transitions. [2022-12-13 15:22:11,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41965811965811967 [2022-12-13 15:22:11,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 982 transitions. [2022-12-13 15:22:11,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 982 transitions. [2022-12-13 15:22:11,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:22:11,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 982 transitions. [2022-12-13 15:22:11,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:11,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:11,825 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:11,825 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 583 flow. Second operand 6 states and 982 transitions. [2022-12-13 15:22:11,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 878 flow [2022-12-13 15:22:11,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 835 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-12-13 15:22:11,829 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 554 flow [2022-12-13 15:22:11,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2022-12-13 15:22:11,830 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2022-12-13 15:22:11,830 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 554 flow [2022-12-13 15:22:11,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:11,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:22:11,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:11,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 15:22:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:12,032 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:22:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash 700589052, now seen corresponding path program 8 times [2022-12-13 15:22:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:22:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085909821] [2022-12-13 15:22:12,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:22:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:22:12,039 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:22:12,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 15:22:12,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:22:12,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 15:22:12,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:12,658 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:22:12,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:22:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:22:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:22:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:12,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:22:13,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:13,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:13,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:22:13,545 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:22:13,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:22:13,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:22:13,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:13,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:22:14,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:22:14,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:22:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:14,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:14,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:22:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085909821] [2022-12-13 15:22:14,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085909821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:14,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:14,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:22:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783519140] [2022-12-13 15:22:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:14,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:22:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:22:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:22:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:22:18,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:22:18,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 554 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:18,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:22:18,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:22:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:22:23,708 INFO L130 PetriNetUnfolder]: 111/338 cut-off events. [2022-12-13 15:22:23,709 INFO L131 PetriNetUnfolder]: For 1185/1185 co-relation queries the response was YES. [2022-12-13 15:22:23,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 338 events. 111/338 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1621 event pairs, 62 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1355. Up to 255 conditions per place. [2022-12-13 15:22:23,710 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 44 selfloop transitions, 10 changer transitions 34/88 dead transitions. [2022-12-13 15:22:23,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 847 flow [2022-12-13 15:22:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:22:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:22:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1659 transitions. [2022-12-13 15:22:23,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3867132867132867 [2022-12-13 15:22:23,714 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1659 transitions. [2022-12-13 15:22:23,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1659 transitions. [2022-12-13 15:22:23,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:22:23,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1659 transitions. [2022-12-13 15:22:23,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.8181818181818) internal successors, (1659), 11 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:23,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:23,719 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:23,719 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 554 flow. Second operand 11 states and 1659 transitions. [2022-12-13 15:22:23,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 847 flow [2022-12-13 15:22:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 786 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-12-13 15:22:23,723 INFO L231 Difference]: Finished difference. Result has 84 places, 50 transitions, 431 flow [2022-12-13 15:22:23,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=431, PETRI_PLACES=84, PETRI_TRANSITIONS=50} [2022-12-13 15:22:23,724 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2022-12-13 15:22:23,724 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 50 transitions, 431 flow [2022-12-13 15:22:23,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:23,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:22:23,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:23,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 15:22:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:23,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:22:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1811269548, now seen corresponding path program 9 times [2022-12-13 15:22:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:22:23,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274171488] [2022-12-13 15:22:23,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:22:23,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:22:23,928 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:22:23,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 15:22:24,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 15:22:24,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:24,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 15:22:24,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:24,378 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 15:22:24,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 15:22:24,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:22:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:22:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:22:24,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 22 [2022-12-13 15:22:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:24,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:24,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 73 [2022-12-13 15:22:25,108 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-13 15:22:25,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 15:22:25,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:22:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:25,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:22:25,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:22:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:25,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:25,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:22:25,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274171488] [2022-12-13 15:22:25,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274171488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:25,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:25,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:22:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613788379] [2022-12-13 15:22:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:25,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:22:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:22:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:22:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:22:29,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 390 [2022-12-13 15:22:29,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 50 transitions, 431 flow. Second operand has 11 states, 11 states have (on average 147.9090909090909) internal successors, (1627), 11 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:29,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:22:29,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 390 [2022-12-13 15:22:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:22:36,372 INFO L130 PetriNetUnfolder]: 126/372 cut-off events. [2022-12-13 15:22:36,372 INFO L131 PetriNetUnfolder]: For 1185/1185 co-relation queries the response was YES. [2022-12-13 15:22:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 372 events. 126/372 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1834 event pairs, 76 based on Foata normal form. 2/372 useless extension candidates. Maximal degree in co-relation 1502. Up to 286 conditions per place. [2022-12-13 15:22:36,374 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 53 selfloop transitions, 15 changer transitions 22/90 dead transitions. [2022-12-13 15:22:36,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 886 flow [2022-12-13 15:22:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:22:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:22:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1814 transitions. [2022-12-13 15:22:36,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3876068376068376 [2022-12-13 15:22:36,377 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1814 transitions. [2022-12-13 15:22:36,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1814 transitions. [2022-12-13 15:22:36,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:22:36,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1814 transitions. [2022-12-13 15:22:36,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.16666666666666) internal successors, (1814), 12 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:36,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:36,382 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:36,382 INFO L175 Difference]: Start difference. First operand has 84 places, 50 transitions, 431 flow. Second operand 12 states and 1814 transitions. [2022-12-13 15:22:36,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 886 flow [2022-12-13 15:22:36,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 777 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-12-13 15:22:36,386 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 489 flow [2022-12-13 15:22:36,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2022-12-13 15:22:36,386 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2022-12-13 15:22:36,387 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 489 flow [2022-12-13 15:22:36,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.9090909090909) internal successors, (1627), 11 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:36,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:22:36,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:36,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 15:22:36,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:36,590 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:22:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1562176588, now seen corresponding path program 10 times [2022-12-13 15:22:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:22:36,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824761534] [2022-12-13 15:22:36,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:22:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:36,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:22:36,595 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:22:36,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 15:22:36,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:22:36,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:36,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:22:36,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:37,026 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:22:37,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:22:37,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:22:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:22:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:37,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:22:37,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:22:37,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:37,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:22:38,181 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:22:38,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:22:38,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:22:38,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:38,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:22:38,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:22:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:38,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:38,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:22:38,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824761534] [2022-12-13 15:22:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824761534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:38,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:38,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:22:38,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719727852] [2022-12-13 15:22:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:22:38,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:22:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:22:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:22:42,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:22:42,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 489 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:42,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:22:42,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:22:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:22:48,817 INFO L130 PetriNetUnfolder]: 101/310 cut-off events. [2022-12-13 15:22:48,817 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2022-12-13 15:22:48,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 310 events. 101/310 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1467 event pairs, 19 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 1191. Up to 140 conditions per place. [2022-12-13 15:22:48,819 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 60 selfloop transitions, 21 changer transitions 17/98 dead transitions. [2022-12-13 15:22:48,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 98 transitions, 908 flow [2022-12-13 15:22:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:22:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:22:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1664 transitions. [2022-12-13 15:22:48,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2022-12-13 15:22:48,823 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1664 transitions. [2022-12-13 15:22:48,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1664 transitions. [2022-12-13 15:22:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:22:48,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1664 transitions. [2022-12-13 15:22:48,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.27272727272728) internal successors, (1664), 11 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:48,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:48,830 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:48,830 INFO L175 Difference]: Start difference. First operand has 77 places, 56 transitions, 489 flow. Second operand 11 states and 1664 transitions. [2022-12-13 15:22:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 98 transitions, 908 flow [2022-12-13 15:22:48,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 809 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-12-13 15:22:48,836 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 516 flow [2022-12-13 15:22:48,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=516, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2022-12-13 15:22:48,837 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2022-12-13 15:22:48,837 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 516 flow [2022-12-13 15:22:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:48,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:22:48,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:48,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 15:22:49,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:49,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:22:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1958042858, now seen corresponding path program 11 times [2022-12-13 15:22:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:22:49,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696265634] [2022-12-13 15:22:49,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:22:49,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:22:49,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:22:49,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:22:49,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 15:22:49,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:22:49,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:22:49,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:49,489 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:22:49,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:22:49,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:22:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:22:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:49,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:22:49,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:22:49,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:49,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-13 15:22:50,289 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:22:50,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:22:50,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:22:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:22:50,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:22:50,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:22:51,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:22:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:51,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:51,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:22:51,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696265634] [2022-12-13 15:22:51,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696265634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:51,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:51,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:22:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061689072] [2022-12-13 15:22:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:22:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:22:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:22:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:22:56,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:22:56,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:56,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:22:56,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:22:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:01,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 15:23:03,533 INFO L130 PetriNetUnfolder]: 90/288 cut-off events. [2022-12-13 15:23:03,533 INFO L131 PetriNetUnfolder]: For 943/943 co-relation queries the response was YES. [2022-12-13 15:23:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 288 events. 90/288 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1319 event pairs, 37 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 1176. Up to 208 conditions per place. [2022-12-13 15:23:03,535 INFO L137 encePairwiseOnDemand]: 379/390 looper letters, 58 selfloop transitions, 12 changer transitions 24/94 dead transitions. [2022-12-13 15:23:03,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 898 flow [2022-12-13 15:23:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:23:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:23:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1654 transitions. [2022-12-13 15:23:03,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38554778554778557 [2022-12-13 15:23:03,540 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1654 transitions. [2022-12-13 15:23:03,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1654 transitions. [2022-12-13 15:23:03,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:03,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1654 transitions. [2022-12-13 15:23:03,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.36363636363637) internal successors, (1654), 11 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:03,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:03,544 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:03,544 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 516 flow. Second operand 11 states and 1654 transitions. [2022-12-13 15:23:03,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 898 flow [2022-12-13 15:23:03,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 879 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 15:23:03,548 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 579 flow [2022-12-13 15:23:03,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=579, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2022-12-13 15:23:03,548 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2022-12-13 15:23:03,548 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 579 flow [2022-12-13 15:23:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:03,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:03,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:03,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-13 15:23:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:23:03,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:23:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash 852955814, now seen corresponding path program 12 times [2022-12-13 15:23:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:23:03,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021212014] [2022-12-13 15:23:03,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:23:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:23:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:23:03,756 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:23:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 15:23:04,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 15:23:04,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:23:04,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 15:23:04,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:04,238 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 15:23:04,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 15:23:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:23:04,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 15:23:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:23:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 22 [2022-12-13 15:23:04,848 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-13 15:23:04,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 15:23:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:04,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:04,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 73 [2022-12-13 15:23:05,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:23:05,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 58 [2022-12-13 15:23:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:05,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:05,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 217 [2022-12-13 15:23:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:05,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:23:05,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:23:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021212014] [2022-12-13 15:23:05,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021212014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:05,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:05,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:23:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700584713] [2022-12-13 15:23:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:05,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:23:05,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:23:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:23:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:23:09,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 390 [2022-12-13 15:23:09,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 579 flow. Second operand has 11 states, 11 states have (on average 147.9090909090909) internal successors, (1627), 11 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:09,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:09,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 390 [2022-12-13 15:23:09,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:23:16,117 INFO L130 PetriNetUnfolder]: 85/277 cut-off events. [2022-12-13 15:23:16,117 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2022-12-13 15:23:16,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 277 events. 85/277 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1265 event pairs, 47 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 1182. Up to 217 conditions per place. [2022-12-13 15:23:16,118 INFO L137 encePairwiseOnDemand]: 379/390 looper letters, 54 selfloop transitions, 9 changer transitions 25/88 dead transitions. [2022-12-13 15:23:16,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 890 flow [2022-12-13 15:23:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:23:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:23:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1806 transitions. [2022-12-13 15:23:16,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3858974358974359 [2022-12-13 15:23:16,121 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1806 transitions. [2022-12-13 15:23:16,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1806 transitions. [2022-12-13 15:23:16,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:23:16,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1806 transitions. [2022-12-13 15:23:16,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.5) internal successors, (1806), 12 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:16,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:16,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:16,125 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 579 flow. Second operand 12 states and 1806 transitions. [2022-12-13 15:23:16,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 890 flow [2022-12-13 15:23:16,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 832 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-12-13 15:23:16,131 INFO L231 Difference]: Finished difference. Result has 92 places, 61 transitions, 538 flow [2022-12-13 15:23:16,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=538, PETRI_PLACES=92, PETRI_TRANSITIONS=61} [2022-12-13 15:23:16,132 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 56 predicate places. [2022-12-13 15:23:16,132 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 61 transitions, 538 flow [2022-12-13 15:23:16,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.9090909090909) internal successors, (1627), 11 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:16,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:23:16,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:16,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-13 15:23:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:23:16,334 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 15:23:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -24864456, now seen corresponding path program 13 times [2022-12-13 15:23:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:23:16,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894373905] [2022-12-13 15:23:16,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:23:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:23:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:23:16,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:23:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29e71d2-dd80-48b0-84cb-3c6a83b151f4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 15:23:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:23:16,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 15:23:16,801 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:23:16,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2022-12-13 15:23:16,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:16,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 15:23:16,886 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 15:23:16,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 15:23:17,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 15:23:17,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 15:23:17,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 15:23:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:17,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:23:17,839 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 15:23:17,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 15:23:17,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 15:23:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:18,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 15:23:18,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 15:23:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:23:18,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:23:18,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:23:18,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894373905] [2022-12-13 15:23:18,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894373905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:18,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:18,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:23:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149961310] [2022-12-13 15:23:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:23:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:23:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:23:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:23:21,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 390 [2022-12-13 15:23:21,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 61 transitions, 538 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:23:21,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:23:21,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 390 [2022-12-13 15:23:21,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand